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INTELLIGENT CHIP AND UPGRADE DESIGN VERSION:After using ultrasonic bark collar for small medium and large dogs, we have upgraded chip with 7 adjustable sensitive levels which can be customized for any breed of dogs. Only your dog sound will trigger the smart sensors which are not affected by another dogs barking. Moreover, using the sleep e allows the barking collar to automatically stop working to save battery lifetime when it is not needed to use. FLEXIBLE SIZES FOR FURRY DOGS - EVEN THE SMALLEST ONES:Small, Medium or Large dog; Indoor or Outdoor; Stubborn breed; Labrador Retriever German Shepherd Bulldog Beagle Terrier Poodle or Chihuahua; No problem. The no bark and training collar is deal for almost any size dogs from 15lbs to 150lbs. Besides, the strap is made from durable materials, so your dog will hardly notice it as well as assure maximum comfort for your dogs. TIPS FOR USE:To get the best results of using the dog barking control device, we suggest customers choosing the most suitable adjustment for your dogs, not too tight or too loose. Moreover, do not leave the barking dog collar on the dog for more than 10 hours. Check the battery weekly, keep the anti-barking collar dry and take notice if the dog keeps barking because of thieves, dangers or natural disasters. GUARANTEE POLICY:We try our best to bring the best satisfied experience to our customers. If you are unhappy with the no bark collar collar for dogs you purchased , please contact us. We are willing to give you a full refund. HUMANE, HARMLESS, EFFECTIVE BARK COLLAR :This anti barking device effectively reduces your dogs barking without causing him/her any pain or distress. Using a progressive high frequency ultrasonic sound and vibration painless stimulus with 7 levels sensitivity adjustment and sleep e, the automatic bark collar helps to control your dogs barking and train your dog in a painless way. colour:Orange Material:ABS + nylon webbing size:6.5*6.5*7.2CM Package Contents: 1*Stop barking Device 1*USB cable Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.